If \(\rm |\vec{a}\times \vec{b}|^2 + |\vec{a}\cdot \vec{b}|^2=144\) – McqOptions

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1.	If \(\rm \|\vec{a}\times \vec{b}\|^2 + \|\vec{a}\cdot \vec{b}\|^2=144\) and \(\rm \|\vec{a}\|=4\), then what is \(\rm \|\vec{b}\|\) equal to?
A.	3
B.	4
C.	6
D.	8
Answer» B. 4

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